# import copy
# dictionary = {'卷心菜':'cabbage','午餐':['lunch','nooning']}
# dictionary1 = dictionary
# dictionary2 = dictionary.copy()
# dictionary3 = copy.deepcopy(dictionary)
# dictionary['卷心菜'] = 'pamhrey'
# dictionary['午餐'].remove('nooning')
# print('dictionary = ', dictionary)
# print('dictionary1 =', dictionary1)
# print('dictionary2 = ', dictionary2)
# print('dictionary3 = ', dictionary3)



# dictionary={
#     '卷心菜':'cabbage',
#     '午餐':'linch',
#     '机器人':'robot',
#     '天空':'sky',
#     '花':'flower'
# }
# print('中英文字典中所有中文词组及其对应的英文单词:')
# for item in dictionary.items():
#     print(item)
# print('中英文字典中所有中文词组：')
# for chinese in dictionary.keys():
#     print(chinese,end=' ')
# print('\n中英文字典中所有英文单词：')
# for english in dictionary.values():
#     print(english, end=' ')